The NRA's cause: urging the U.S. Supreme Court to guarantee the ability of gun owners across the land to keep and bear arms.

Last year, the high court struck down a ban on handguns in Washington, D.C., ruling for the first time that the Second Amendment's right to bear arms applies to individuals who keep a gun at home for self-defense. But the court made it clear the ruling applied only to the District of Columbia, a federal enclave.

Now, gun advocates are challenging Chicago's handgun ban, asking the Supreme Court to rule that the Second Amendment equally applies to the states. And there was no shortage of states - 34 in all - jumping on the bandwagon in support of the court hearing the case.

In July, before the court agreed to take the case, Brown went so far as to file his own friend-of-the-court brief asking that Chicago's gun ban be overturned - arguing that if the court doesn't act, "California citizens could be deprived of the constitutional right to possess handguns in their homes."

His stance has angered a number of gun control proponents.

Julie Leftwich, legal director of Legal Community Against Violence, said this isn't simply about Brown defending the Second Amendment - it also marks a dramatic turnabout from the administration of his Democratic predecessor, Bill Lockyer, a staunch gun control advocate.

"Jerry Brown hasn't shown leadership in the legislative arena related to the issue of gun violence prevention ... and he hasn't sponsored or weighed in on any significant gun bills," Leftwich told The Chronicle's Carla Marinucci.

Brown's pro-gun stand has also left some San Francisco officials scratching their heads. They're awaiting a ruling in the Chicago case to see how it might affect two local gun-rights lawsuits.

"I'm just gratified that the attorney general in his filing has acknowledged that California has been a national leader in passing commonsense legislation to regulate firearms," City Attorney Dennis Herrerasaid.

With the high court now agreeing to hear the Chicago case, the only question remaining was whether Brown - amid lobbying from both sides in the fight - would weigh in with another brief on the case's merits by Monday's deadline.

The usually talkative Brown didn't respond to our requests to be interviewed, but on Friday, his spokeswoman, Christine Gasparac, said the attorney general wouldn't be submitting another brief.

"He believes we have nothing more to add," she said.

Hot talk: The sister of slain San Francisco police Officer Isaac Espinozahas some harsh words for Police Chief George Gascón in the wake of his endorsement last week of District Attorney Kamala Harrisfor attorney general.

"I'm appalled and disgusted he would endorse her," a tearful Regina Espinozasaid, still angry about Harris' decision five years ago not to seek the death penalty for her brother's killer, David Hill.

Migden, who started out her career on the board, had been looking into a possible run in District 10, now represented by the soon-to-be termed-out Sophie Maxwell.

Alas, "the reality of what that would have meant, including moving, was just too complicated," the South of Market Democrat said.

And finally: Just when it looked like Jerry Brown might go unchallenged in the Democratic gubernatorial primary comes news that one other contender has leapt into the ring - busty L.A. actress and billboard model Angelyne.

Angelyne - who also ran in the gubernatorial recall election six years back - might want to do a bit of fact checking ahead of any debates.

Her agent's big press release says Angelyne is taking on "Attorney General Pat Brown" - who, last time we checked, was Jerry's late dad.